I got suspended from work because i was accused of stealing time but there was no proof union rep. Said they will call me back

First, I would follow up in writing with your union. They are usually more responsive when members write them, even an email. Second, why did...

Unless you are part of a union, you are an employee at will. That means you can be disciplined for any reason as long as it is not discriminatory...

First, I would follow up with your union in writing, that sometimes forces them to take action. Second, since you are suspended but not terminated...

How to pull legal action towards a complete institution/department at an university for not paying ME as their employee?

You should contact the New York State Department of Labor.

Can I quit my job if my boss treats me unfairly ??

You are allowed to quit, but you will not be able to collect unemployment.

What would be my next step ?

Your best solution would likely be to go to small claims court.

II felt discriminated by my employer due to my age,(55) and he is (33) and fact that my computer skills are not great .

More information is needed as these are fact specific questions. you should consult with a local employment attorney.

Your boss can require you to work an hours that are inconvenient for you as long as they do not do so discriminatorly (due to your race, religion,...

Any contingency attorneys?

Use the Find a lawyer section on this website. Many offer free consultations and some will take cases on a contingency.

As indicated above, they have to allow you to take off, but if you are paid hourly, they do not have to pay you.